Ideal for remote areas where an electrical current isn’t readily available. Electric fence energizer controls 1-3 acres with 0.06 joule output. Low impedance delivers an effective shock even when moderate vegetation is in contact with the fence. Its solar battery has automatic battery saver to conserve energy on cloudy days by extending the pulse off time. Easy battery check allows you to determine the battery voltage within 15 seconds. Built-in mount fits t-posts, round posts, wood posts and flat surfaces. Recommended to use with steel or aluminum wire. USA made.